Continuous extractor



April-22, 1930. F. FURBUsH 1,755,214' v CONTINUOUS EXTRACTOR Filed Dec,14, 1926 3 Sheets-51186K l 11T Diff/PINI April 22, 1930. F. L. FURBUSH1,755,214

y CONTINUOUS EXTRACTOR Filed Dec. 14, 1926 3 Sheets-Sheet 2 April 22,1930. F. FuRBUsH l CONTINUOUS EXTRACTOR Filed Dec. 14, 1926 3Sheets-Shes?I 3 Y Patented pr. 2 2,v

CONTINUOUS EXT3-ACTOR .ppilicatlion iled xllecem'ber E14, 519:26..Serial -1\T o..:1v54,8 23.

This invention relates to `a device f for tracting inisture from'comminuted matters f sueh as rubber fibre. and thelikeff fThe'Principal Objecsflh inventif?? afet fprovide an y'improved means fordriving vtheendlessY apron Von vvhiohf the material is carriedthroughthe 'squeeze rollsgtof jprovide aniinprovedforrn-of apronwhichwill/.pass

around the druins atv thel ends ofthe .device Without'bindingand Withlesswear than has A been the ca'seheretoifore; in Combinationvvithyrldilygand to. providean anxi'liarylnean'sf' which v,Will .drivefthefaipron that Work i p'o vely'fatl'anvtiine vvhen j thelinain `dri-v.-`ing ns'loses Control ofthe apron. objects and 'advantagesof thein-y 20vie. will@ppeariheriafes J encefifs .tobiehadto th ,accompanying Ldi@siinwhichfi riga sa new imL {heier-f4 Y-il-*ie'fs er1@ @Pros .andLemie;

A vel'iti'on"relates tol a Anlaohi'ne forefrtracftirrg' nioi'stureffrornWet conniinted rub- .beror othrffbrousrnaterial. These nia'chinesusually have =a'n"e`n`dl `ess apron in' whichY the several liirls -vare"connected together by'hinges Whiehpassover oetanfgul'ar or siniilarfdrumsy at the vends: The "swinging ofthe .plates on .their l'hingers asfth'ey pass 'overjthe drums fis ac'kcompanied )by :considerablefrvvearand' in caseof llaclr ofjeXa'ct :registration the hinge parts 1vare-apttojbebent.' The result is thatr they weer; at thehngesffirst and thelhinges lim-it the nre er 'the Deaf-Chine.'.'*Theednecig'tienerrneiiqsiepressedaeofffhs masser df :a lrlecoil: nous 'extractor'constructed 1n accordance with' ."thisxinventiong Y lshovvingthevratchet@drivingfarl l "Where they receive-pressure fromA rods 2'f3 80yWeights ca'nbe adjusted'by the fusual practice 'of putting on or takingoijthe -vveighting di's'cs. The rods-are guided in the usual Way,

cause 'is to getinto the jointsarldbearV` ingsv of .the machine,y withobviously loadk resulfts. Thisinventionzis vdesigned .to avoi d thesedif1iculties largely and one of the prins cipalfeatures is theconstruction' of thegapron ygreat; 'flexibility'of sprocket chainsoiicer-y t'ainfconstruetions; o

securing the above .nienvin suohja manner that the apron itself YWillhave no hinges. and Will'depend. uponthe`v a duplex machine, althoughit' is :to beunder` I stood that Ya machine '-vvitha single .pair of v65 l same principle. this Vmachine Ighave pro- I vided the rfr anielOwith-b'earingslfor the studs extracting rollers 'can 'beconstructedonthe offa pair fof lower pressurerollers fl'lfspacedV :z adistance apart and withV apair ofslots f0r"'thefstuds yof a vpair Vofuppervrollers These upper rollers bearvviththeirvvhole Weightonthelowerrollers. Lever-S15, Whioh;

arfegpivoted `at 165 translnitl pressure through] .bearings 14 to theupper yrollers. The levers ,.75 .mounted by hand nuts v1x8 on verticalrods lfarepr'essed upon bysprings v17 adjustablyu 19.I'These'roiflsfll'awe hooks at thebottoln engaging under end levers wQ1pivoted at `22, and' 'extending to the center of vthe ymachine` sistsv"off ap-late vvhich \i's providedwi th perforations." l`hese vplatesarebeveledontheir, l. Vopposite endsso that When two plates vswingabout-'an axis at their. ends the edges WillnotV interfere Witheachother as indicated in-Fig;v

4l ""Eah plate i's'covered-Witha brass plate '26 "Whichis turned Vover.atits edges to t the f 'inclined edge'oi 'the ironplate and securedthereto.V This brass plate isdprovide'd 'very'fiindp erorationsWhile-the perfforations y inthe' lneftal plate are coarse'. Theplateseon# stiftutilig 'the apron are entirely separate frein eac'hvother'and although they "come into con- Y isan easy drive on thesprocket chains. I-Iowever, in some cases the drive of the apron mightbe interrupted by various conditions that may result in this industry.For the purpose of keeping the -chains going at such times andautomatically restoring them to this friction drive when this is over, Iprovide an auxiliary drive. On the shaft of one of the rollers ll isplaced a sprocket`wheel 29 and on a shaft 30 is placed another sprocketit. wheel and the latter is driven from the former by a sprocket chain3l. This sprocket wheel on the shaft 30 is larger than the drivingsprocket wheel and consequently would drive the apron at less than itsnormal speed. .f It is connected with the apron by a pawl and ratchetdevice comprising spring ratchet pawls 33. l Y

lIn the ordinary operation of the device this ratchets over withoutperforming anyV I S function but if vthe apron is not driven by therolls, the ratchet device will positively operate vthe apron at a lowerspeed. When the rolls are working normally' again, they take up theapron and'run it at full speed,

l `thus rendering the ratchet device inactive.

and is received in the troughs 35 on both sides VThe liquid extractedfrom the material by the press rolls drops down below, of course,

in the present case. They extend clear to the ''center so that they willreceive all of the liq uid drained out. At the bottom they are providedwith depressions 36 which can drain ont at one end by gravity or can beattached to a hose connection andV pumped out. This faffords a means forgetting the water or other liquid out of the machine either continuouslyor intermittently. Y

The studs 30 of one driving drum for the apron are adjustable by screws39 while the opposite stud is put in stationary position preferably, asonly one adjustment is necesi sary. The driving of the apron isperformed in the usual way by means of a driving shaft and gears asindicated in Fig. 2.

For the purpose of raising the weights 24 and the bearings 14 so as notto bear a weight on the rollers 13 when the machine isV idle,

the rods 23 are provided with sleeves 40 ca-` these sleeves'is connectedby a link 4l to a lever 42 pivoted at 43. This lever has a link f 44pivotally connected to al hand lever 45 Which itself is pivoted at 46.Thenormal d' v{ratchetarrangement will operate idly under fnormalconditions, but when the apron is not at aspeed as high as that of thelargerj sprock' wheel, the latter through its ratchet position is shownat the left in Fig. 2. When it is desired to raise the weights, 1n casethe machine is idle, the handle 45 is depressed asV This machine is moredurable than the machines nowon the market on account of the removal ofthe weak point in the apron. The sprocket chains for driving the aprons"are not weakened in any way and do not present the same difficulty inthe pivotal connections as the links heretofore' used. The liquid iscaught and drained oil' without so much dangerof its reaching andrusting the bearings or chains. g

Althoughy I have illustrated and described only a'single form vof theinvention I am aware ofthe fact that modifications can be made' thereinby any person skilled in the art without departing from the scope oftheinventionas expressed in the claims.

Therefore, I doV not wish to be limitedrto all the details ofconstruction herein shown and `described,but what I do claim is :--Vy

'1. In an extracting machine, the combination with-a pair ofvextractingrolls, of an apron-'passing between them, said `apron being-vmade upfof plates 'free at their edges fromeach other and sprocketchains on each side connected with the several platestocom'- plete theapron, whereby thepassageof the apron between the rolls will driveit,means for driving one jof the'rolls, and positive means comprising aratchet device for driv-v ing the apron at a lower speed whenever thepress rolls do not drive it ata'speed ygreater Y thansaid lower speed.

2. In `an extractor, the combination with a pair of press rolls, meansfor. driving the lower roll, and means for pressing the upper rollagainst the lower roll for the purpose of expressing water from rubberor fibrous vmaplates .for carrying the material, a pair of whereby theadjacent edges of the plates are freefrom each other, a Vdrum at veachend over which the apron passes, said apron being drivenY freely bythe"press rolls,'a sprocket wheel on the shaft of the lower press roll, alarger sprocket wheel on the shaft of one of the drums, a sprocket chainconnecting said H Vsprocket Wheels, and a ratchet mechanism bepable ofsliding slightly thereon but adaptedV L. i' to engage the weights at thetop. Each of;

enthe larger sprocket/wheel and the v :whereby the sprocket wheel and'11o terial, of an endless apron passing between i the press rolls andcomprising a series 4of e l :ing said sprocket wheels, and a ratchetmechl anism between the largersprocket wheel andv the drum, whereby..the sprocket wheel and mechanism, will drive the drum and thereby theapron positively atlower' than normal speed.

3. In an extractor, the `combination with a pair of press rolls, of anendless apron passing between the press rolls, a drum at each end overwhich the apron passes, said apron being driven freelyby` the pressrolls, a

sprocket wheel on the shaft of the lower press roll, a largersprocketwheelon the shaft of V' one of the drums, a sprocket chainconnectratchet 4arrangement wlloperate idly under normal conditions, butwhen the apronis not driven at a speed as high as that of the vlargersprocket wheel, the latter, through its ratchet bearings, and-means forVpositively driving it,

the other press rollV being mounted freely to move up and down randpress on the lower roll, of means for applying Weightsto the upperpressroll to cause it to bear with considerable vpressure on the lower roll,said y3o meansV involving a vertical rod, a weight thereon at the top,asleeve on lthe rod adapted'to be moved up to engage the weight, a linkdepending from said sleeve, a lever connectedwith the link below thesleeve and pivoted between its Vends, a second link depend- Y,

ing from the opposite end'ofV the lever, and

a hand leverpivoted beyond-the'second link f and connected with-it.v v

5. In an extractor, the combination with a pair .of press rolls, ofmeans for .applying l pressure to the upper press roll to cause it tobear with considerable pressure on ythe lowerl roll, said meansinvolving a vertical rod, a weight thereon, a sleeve on the rod adaptedtofbe movedup to engage the weight, a link connected' with said sleeve,a lever connected withzthe linkand pivoted between its ends,

a second link connected with the opposite g. I end ofthe lever, andahand lever pivoted beyond the secondV link and connected with it,whereby, when theY hand lever is depressed,

. the frst-namedflever will be raised at the end yconnected with thefirst-'named link Aand will raise said sleeve to release the apparatusof y the weight, said pivots being in such relation to each other thatthe `twopivotsv at the two Y* ends of the first-named link will be inalignment with the pivot of the rst-named lever, whereby the parts willbe retained` in this position when pressure is removed from the handlever.

i In testimony whereof I have hereunto affixed my signature. l

FRANK FURBUSI-I.

